Literature DB >> 11926540

Two new sulfated furostanol saponins from Tribulus terrestris.

Ivanka Kostova1, Dragomir Dinchev, Gudrun Hopp Rentsch, Vladimir Dimitrov, Antoaneta Ivanova.   

Abstract

The known furostanol saponins methylprotodioscin and protodioscin and two new sulfated saponins, sodium salt of 26-O-beta-glucopyranosyl-22alpha-methoxy-(25R)-furost-5-ene-3beta,26-diol-3-O-alpha-rhamnopyranosyl-(1-->2)-beta-4-O-sulfo-glucopyranoside (methylprototribestin) and sodium salt of 26-O-beta-glucopyranosyl-22alpha-hydroxy-(25R)-furost-5-ene-3beta,26-diol-3-O-alpha-rhamnopyranosyl-(1-->2)-beta-4-O-sulfo-glucopyranoside (prototribestin) have been isolated from the aerial parts of Tribulus terrestris L. growing in Bulgaria. The structures of the new compounds were elucidated on the basis of 1D and 2D (DQF-COSY, TOCSY, HSQC-TOCSY, HSQC, HMBC, ROESY) NMR data, ESI mass spectra and chemical transformation.

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Year:  2002        PMID： 11926540     DOI： 10.1515/znc-2002-1-206

Source DB:  PubMed          Journal:  Z Naturforsch C J Biosci        ISSN： 0341-0382


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